Join the RHS today and support our charity Join now. Save to My scrapbook. Hydrangea arborescens 'Annabelle'.
Quick facts. Jump to Suitable for When to prune hydrangeas How to prune hydrangeas Problems. Suitable for The pruning methods explained below are for individual types and species of hydrangea. When to prune hydrangeas Most pruning is carried out in late winter or early spring. How to prune hydrangeas Dead-heading Dead blooms on mophead hydrangeas can, in mild areas, be removed just after flowering, but it is best to leave them on the plant over winter to provide some frost protection for the tender growth buds below.
Remove the dead flowerheads in early spring, cutting back the stem to the first strong, healthy pair of buds down from the faded bloom Lacecaps are hardier, and the faded flowerheads can be cut back after flowering to the second pair of leaves below the head in order to prevent seed developing, which saps energy from the plant Pruning established mopheads and lacecaps Cut out one or two of the oldest stems at the base to encourage the production of new, replacement growth that will be more floriferous Poor or neglected plants can be entirely renovated by cutting off all the stems at the base.
However, this will remove all the flowers for that summer, and the new stems will not bloom until the following year Pruning climbing hydrangeas The climbing hydrangea Hydrangea anomala subsp.
Most flowers appear towards the top of the plant, so try to leave as much of this un-pruned as possible Established plants will tolerate hard pruning in spring, but extensive cutting back all in one go is likely to reduce flowering for the next couple of summers.
To prevent flower loss, stagger drastic pruning over three or four years, reducing the size of the plant gradually Pruning other hydrangeas Hydrangea serrata can be pruned in the same way as mophead and lacecap hydrangeas Hydrangea paniculata and Hydrangea arborescens are treated differently.
Although the only essential work is to remove dead wood in spring, these species flower more prolifically when pruned back annually to a framework of branches. To produce larger flower panicles on strong, upright branches, hard prune to the lowest pair of healthy buds, creating a low framework of branches.
This usually results in a pruned framework of no more than 25cm 10in high but, if more height is required, cut to about 60cm 2ft tall Most other hydrangea species, including Hydrangea aspera and Hydrangea quercifolia , need only minimal pruning in spring to remove dead and over-long stems.
Problems If there is any frost damage in spring, prune back damaged shoots to just above the first undamaged pair of buds on live, healthy wood Also remove any weak, straggly stems. In particular, cut out any stems that trail onto the ground.
See also Although I know a good deal about pruning, this answer required an explanation. The first two types Mophead, Oakleaf produce buds on old wood, or stems that have been on the plant for more than a year. The best time to prune these varieties is after they are done blooming in the summer, but no later than the end of July since they set their buds for next year in August and September.
You can also prune out dead and crossing branches in the fall. The older the wood that you remove, the fewer blooms produced the following summer. The other two varieties, PeeGee and Annabelle, produce buds on the new growth each year. These hardy plants can be pruned to the ground every fall and they will regrow each spring with new buds on the new wood. This drastic pruning can take its toll on these plants and they may become weaker with age. How do you tell which variety you have in your landscape?
I suggest you click on this link. How to prune hydrangeas in spring — pruning old hydrangea stems. Pruning climbing hydrangeas Climbing hydrangeas such as Hydrangea anomola subsp. Subscribe now. Buy now for spring flowers. Double up for 1P more. Evergreen climbing hydrangea. Buy now for year-round interest. Offer Ends: Tuesday, 30 November, Buy now for instant colour. Offer Ends: Friday, 10 December, Clematis 'Winter Beauty'. Limited time only - buy now. Ends in: 3 days.
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